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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2 Suppl
|
| pubmed:dateCreated |
1993-6-30
|
| pubmed:abstractText |
The maximum myopic correction with one-step ablation in excimer laser photorefractive keratectomy (PRK) using the ExciMed UV200 LA 193-nanometer excimer laser (Summit Technology, Inc, Waltham, Mass,) is only up to 6.00 D because of a fixed computer program. We performed a simultaneous two-step PRK procedure for nearly full correction on 19 eyes of 19 patients with myopia ranging from -8.00 to -13.50 D. We clinically evaluated the results of this modified technique at 6 months, or more, after surgery. In the two-step PRK procedure, we attempted in the first-step of a maximum correction of -6.00 D (including up to -7.50 D) with 4.5-millimeter ablation zone. The second step was performed immediately thereafter to correct the remaining myopia with a 5.0-millimeter diameter ablation. Mean preoperative manifest refraction was -9.77, D and mean postoperative manifest refraction was -1.09 D at 6 months after two-step PRK. Uncorrected visual acuity of 20/40 or better was achieved in 74% of 19 eyes (two were amblyopic eyes). Corneal subepithelial haze was trace or +1 in all cases at 3 months, but faded out after 3 months. Transient intraocular pressure elevation occurred in one case. No other significant complications developed. Long-term follow up will be required to evaluate the results of two-step PRK.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:issn |
1042-962X
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
9
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
S44-7
|
| pubmed:dateRevised |
2007-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:8499377-Adult,
pubmed-meshheading:8499377-Astigmatism,
pubmed-meshheading:8499377-Cornea,
pubmed-meshheading:8499377-Female,
pubmed-meshheading:8499377-Follow-Up Studies,
pubmed-meshheading:8499377-Humans,
pubmed-meshheading:8499377-Laser Therapy,
pubmed-meshheading:8499377-Male,
pubmed-meshheading:8499377-Myopia,
pubmed-meshheading:8499377-Refraction, Ocular,
pubmed-meshheading:8499377-Treatment Outcome,
pubmed-meshheading:8499377-Visual Acuity,
pubmed-meshheading:8499377-Wound Healing
|
| pubmed:articleTitle |
Clinical experience of two-step photorefractive keratectomy in 19 eyes with high myopia.
|
| pubmed:affiliation |
Department of Ophthalmology, Catholic University Medical College, Kangnam St Mary's Hospital, Seoul, Korea.
|
| pubmed:publicationType |
Journal Article
|